Do you need conduit for rotary drilling and pouring?

Need. According to the query of the rotary excavator related information, rotary excavator drilling and pouring need conduit, rotary excavator process:Measurement and placement → digging mud ditch → burying shroud → drilling rig driller to the center of the pile → hole drilling to the bottom of the designed pile → clear hole qualified → lifting reinforcing steel cage → under the conduit → filling concrete → pulling out the conduit.